Microfi has recently updated Nitrogen, a free and finger friendly music player for Windows Mobile, to version 1.1.  The update incorporates several bug fixes and addresses memory leaks present in 1.0.  Perhaps the most notable new feature, Nitrogen now supports additional music codecs, including WMA, WAV, AAC, MP4 and M4U thanks to supporting GSPlayer plugins.  You can download the update here.  The full list of new features and fixes found in version 1.1 is below:

• Fixed many memory leaks and minor bugs.
• Added multilanguage support.
• Added option to resume playing when program starts.
• Added GSPlayer support (now accepting WMA/WAV/AAC/MP4/M4U) files.
• Improved the option “Change playing song through previous/next buttons”.
• Nitrogen now pauses when phone received call.
• Song info is available on registry.
• Fixed the MP3 ringtone issue.
• Now handling large album art files.
• Media browser and Equalizer now show “Ok” button instead of “X”, allowing users to close them without closing the whole app.